公开(公告)号：US07132959B2

公开(公告)日：2006-11-07

申请号：US10787575

申请日：2004-02-26

申请人： Thomas Seabury ,  Robert S. Allen

发明人： Thomas Seabury ,  Robert S. Allen

IPC分类号： G08G1/01

CPC分类号： G08G1/042

摘要： A technique for operating a vehicle detection system involves obtaining samples randomly from a detector of the vehicle detection system and determining the presence of a vehicle in response to the random samples. When multiple detectors are located in close proximity to each other, the likelihood of interference caused by concurrent sampling events is reduced because of the randomness of the sampling, which in turn reduces the occurrence of incorrect vehicle detection results. Control systems for vehicle detection systems obtain the random samples independently from each other. Because the random samples are obtained independently from each other, multiple inductive loop vehicle detection systems can be operated in close proximity to each other without having to be coordinated or synchronized in any way. The possibility of an incorrect vehicle detection as a result of concurrent sampling events can be further reduced using validity checking techniques.

摘要翻译： 用于操作车辆检测系统的技术包括从车辆检测系统的检测器随机获取样本，并响应于随机样本确定车辆的存在。 当多个检测器位于彼此靠近时，由于采样的随机性而导致由并发采样事件引起的干扰的可能性降低，这又减少了不正确的车辆检测结果的发生。 用于车辆检测系统的控制系统彼此独立地获得随机样本。 由于随机样本彼此独立地获得，所以多个感应环路车辆检测系统可以彼此靠近地操作，而不必以任何方式协调或同步。 可以使用有效性检查技术进一步减少作为并发采样事件的结果的不正确的车辆检测的可能性。

公开(公告)号：US4996716A

公开(公告)日：1991-02-26

申请号：US462287

申请日：1989-12-28

申请人： Thomas Potter ,  Thomas Seabury

发明人： Thomas Potter ,  Thomas Seabury

IPC分类号： G08G1/0967 ,  H04B5/00

CPC分类号： G08G1/096716 ,  G08G1/096783 ,  H04B5/0012 ,  H04B5/02

摘要： A method and system for transferring information between a moving vehicle and a stationary information location having a vehicle detector system with a loop antenna by using the loop antenna as either the receiving antenna for signals transmitted from a moving vehicle or as the transmitting antenna for signals generated by a transmitter located at the vehicle detector site for transfer to a receiver mounted on a moving vehicle. The information is encoded on a carrier having a frequency outside the normal frequency range of the vehicle detector system, preferably by interrupted carrier pattern processing.

摘要翻译： 一种用于通过使用环形天线作为用于从移动车辆发送的信号的接收天线或作为生成的信号的发送天线在具有具有环形天线的车辆检测器系统的移动车辆和固定信息位置之间传送信息的方法和系统 通过位于车辆检测器位置的发射器传送到安装在移动车辆上的接收器。 信息被编码在具有在车辆检测器系统的正常频率范围之外的频率的载波上，优选地通过中断的载波模式处理来编码。